Answer
$$5x^4+2x+4x^2+3x^2-8x-x^4=4x^4+7x^2-6x$$
Explanation
| $$ \begin{aligned}5x^4+2x+4x^2+3x^2-8x-x^4& \xlongequal{ \color{blue}{ \text{\normalsize{ \htmlClass{explanationCircle explanationCircle1}{\textcircled {1}} } }}}4x^4+7x^2-6x\end{aligned} $$ | |
| ① | Combine like terms: $$ \color{blue}{5x^4} + \color{red}{2x} + \color{green}{4x^2} + \color{green}{3x^2} \color{red}{-8x} \color{blue}{-x^4} = \color{blue}{4x^4} + \color{green}{7x^2} \color{red}{-6x} $$ |
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